| 1 | <?php
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| 2 | /*=======================================================================
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| 3 | // File: JPGRAPH_MGRAPH.PHP
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| 4 | // Description: Class to handle multiple graphs in the same image
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| 5 | // Created: 2006-01-15
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| 6 | // Ver: $Id: jpgraph_mgraph.php 1012 2008-06-23 15:02:15Z ljp $
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| 7 | //
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| 8 | // Copyright (c) Aditus Consulting. All rights reserved.
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| 9 | //========================================================================
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| 10 | */
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| 11 |
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| 12 | //=============================================================================
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| 13 | // CLASS MGraph
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| 14 | // Description: Create a container image that can hold several graph
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| 15 | //=============================================================================
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| 16 | class MGraph {
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| 17 |
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| 18 | protected $img=NULL;
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| 19 | protected $iCnt=0,$iGraphs = array(); // image_handle, x, y, fx, fy, sizex, sizey
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| 20 | protected $iFillColor='white', $iCurrentColor=0;
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| 21 | protected $lm=0,$rm=0,$tm=0,$bm=0;
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| 22 | protected $iDoFrame = FALSE, $iFrameColor = 'black', $iFrameWeight = 1;
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| 23 | protected $iLineWeight = 1;
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| 24 | protected $expired=false;
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| 25 | protected $img_format='png',$image_quality=75;
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| 26 | protected $iWidth=NULL,$iHeight=NULL;
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| 27 | protected $background_image='',$background_image_center=true,
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| 28 | $backround_image_format='',$background_image_mix=100,
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| 29 | $background_image_y=NULL, $background_image_x=NULL;
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| 30 |
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| 31 | // Create a new instane of the combined graph
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| 32 | function MGraph($aWidth=NULL,$aHeight=NULL) {
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| 33 | $this->iWidth = $aWidth;
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| 34 | $this->iHeight = $aHeight;
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| 35 | }
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| 36 |
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| 37 | // Specify background fill color for the combined graph
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| 38 | function SetFillColor($aColor) {
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| 39 | $this->iFillColor = $aColor;
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| 40 | }
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| 41 |
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| 42 | // Add a frame around the combined graph
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| 43 | function SetFrame($aFlg,$aColor='black',$aWeight=1) {
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| 44 | $this->iDoFrame = $aFlg;
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| 45 | $this->iFrameColor = $aColor;
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| 46 | $this->iFrameWeight = $aWeight;
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| 47 | }
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| 48 |
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| 49 | // Specify a background image blend
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| 50 | function SetBackgroundImageMix($aMix) {
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| 51 | $this->background_image_mix = $aMix ;
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| 52 | }
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| 53 |
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| 54 | // Specify a background image
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| 55 | function SetBackgroundImage($aFileName,$aCenter_aX=NULL,$aY=NULL) {
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| 56 | // Second argument can be either a boolean value or
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| 57 | // a numeric
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| 58 | $aCenter=TRUE;
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| 59 | $aX=NULL;
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| 60 |
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| 61 | if( $GLOBALS['gd2'] && !USE_TRUECOLOR ) {
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| 62 | JpGraphError::RaiseL(12001);
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| 63 | //("You are using GD 2.x and are trying to use a background images on a non truecolor image. To use background images with GD 2.x you <b>must</b> enable truecolor by setting the USE_TRUECOLOR constant to TRUE. Due to a bug in GD 2.0.1 using any truetype fonts with truecolor images will result in very poor quality fonts.");
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| 64 | }
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| 65 | if( is_numeric($aCenter_aX) ) {
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| 66 | $aX=$aCenter_aX;
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| 67 | }
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| 68 |
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| 69 | // Get extension to determine image type
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| 70 | $e = explode('.',$aFileName);
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| 71 | if( !$e ) {
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| 72 | JpGraphError::RaiseL(12002,$aFileName);
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| 73 | //('Incorrect file name for MGraph::SetBackgroundImage() : '.$aFileName.' Must have a valid image extension (jpg,gif,png) when using autodetection of image type');
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| 74 | }
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| 75 |
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| 76 | $valid_formats = array('png', 'jpg', 'gif');
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| 77 | $aImgFormat = strtolower($e[count($e)-1]);
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| 78 | if ($aImgFormat == 'jpeg') {
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| 79 | $aImgFormat = 'jpg';
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| 80 | }
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| 81 | elseif (!in_array($aImgFormat, $valid_formats) ) {
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| 82 | JpGraphError::RaiseL(12003,$aImgFormat,$aFileName);
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| 83 | //('Unknown file extension ($aImgFormat) in MGraph::SetBackgroundImage() for filename: '.$aFileName);
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| 84 | }
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| 85 |
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| 86 | $this->background_image = $aFileName;
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| 87 | $this->background_image_center=$aCenter;
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| 88 | $this->background_image_format=$aImgFormat;
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| 89 | $this->background_image_x = $aX;
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| 90 | $this->background_image_y = $aY;
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| 91 | }
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| 92 |
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| 93 |
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| 94 | // Private helper function for backgound image
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| 95 | function _loadBkgImage($aFile='') {
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| 96 | if( $aFile == '' )
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| 97 | $aFile = $this->background_image;
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| 98 |
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| 99 | // Remove case sensitivity and setup appropriate function to create image
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| 100 | // Get file extension. This should be the LAST '.' separated part of the filename
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| 101 | $e = explode('.',$aFile);
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| 102 | $ext = strtolower($e[count($e)-1]);
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| 103 | if ($ext == "jpeg") {
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| 104 | $ext = "jpg";
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| 105 | }
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| 106 |
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| 107 | if( trim($ext) == '' )
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| 108 | $ext = 'png'; // Assume PNG if no extension specified
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| 109 |
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| 110 | $supported = imagetypes();
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| 111 | if( ( $ext == 'jpg' && !($supported & IMG_JPG) ) ||
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| 112 | ( $ext == 'gif' && !($supported & IMG_GIF) ) ||
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| 113 | ( $ext == 'png' && !($supported & IMG_PNG) ) ) {
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| 114 | JpGraphError::RaiseL(12004,$aFile);//('The image format of your background image ('.$aFile.') is not supported in your system configuration. ');
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| 115 | }
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| 116 |
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| 117 | if( $ext == "jpg" || $ext == "jpeg") {
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| 118 | $f = "imagecreatefromjpeg";
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| 119 | $ext = "jpg";
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| 120 | }
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| 121 | else {
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| 122 | $f = "imagecreatefrom".$ext;
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| 123 | }
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| 124 |
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| 125 | $img = @$f($aFile);
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| 126 | if( !$img ) {
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| 127 | JpGraphError::RaiseL(12005,$aFile);
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| 128 | //(" Can't read background image: '".$aFile."'");
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| 129 | }
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| 130 | return $img;
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| 131 | }
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| 132 |
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| 133 | function _strokeBackgroundImage() {
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| 134 | if( $this->background_image == '' )
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| 135 | return;
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| 136 |
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| 137 | $bkgimg = $this->_loadBkgImage();
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| 138 | // Background width & Heoght
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| 139 | $bw = imagesx($bkgimg);
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| 140 | $bh = imagesy($bkgimg);
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| 141 | // Canvas width and height
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| 142 | $cw = imagesx($this->img);
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| 143 | $ch = imagesy($this->img);
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| 144 |
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| 145 | if( $this->background_image_x === NULL || $this->background_image_y === NULL ) {
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| 146 | if( $this->background_image_center ) {
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| 147 | // Center original image in the plot area
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| 148 | $x = round($cw/2-$bw/2); $y = round($ch/2-$bh/2);
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| 149 | }
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| 150 | else {
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| 151 | // Just copy the image from left corner, no resizing
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| 152 | $x=0; $y=0;
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| 153 | }
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| 154 | }
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| 155 | else {
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| 156 | $x = $this->background_image_x;
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| 157 | $y = $this->background_image_y;
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| 158 | }
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| 159 | $this->_imageCp($bkgimg,$x,$y,0,0,$bw,$bh,$this->background_image_mix);
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| 160 | }
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| 161 |
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| 162 | function _imageCp($aSrcImg,$x,$y,$fx,$fy,$w,$h,$mix=100) {
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| 163 | imagecopymerge($this->img,$aSrcImg,$x,$y,$fx,$fy,$w,$h,$mix);
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| 164 | }
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| 165 |
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| 166 | function _imageCreate($aWidth,$aHeight) {
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| 167 | if( $aWidth <= 1 || $aHeight <= 1 ) {
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| 168 | JpGraphError::RaiseL(12006,$aWidth,$aHeight);
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| 169 | //("Illegal sizes specified for width or height when creating an image, (width=$aWidth, height=$aHeight)");
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| 170 | }
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| 171 | if( @$GLOBALS['gd2']==true && USE_TRUECOLOR ) {
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| 172 | $this->img = @imagecreatetruecolor($aWidth, $aHeight);
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| 173 | if( $this->img < 1 ) {
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| 174 | JpGraphError::RaiseL(12011);
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| 175 | // die("<b>JpGraph Error:</b> Can't create truecolor image. Check that you really have GD2 library installed.");
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| 176 | }
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| 177 | ImageAlphaBlending($this->img,true);
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| 178 | } else {
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| 179 | $this->img = @imagecreate($aWidth, $aHeight);
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| 180 | if( $this->img < 1 ) {
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| 181 | JpGraphError::RaiseL(12012);
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| 182 | // die("<b>JpGraph Error:</b> Can't create image. Check that you really have the GD library installed.");
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| 183 | }
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| 184 | }
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| 185 | }
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| 186 |
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| 187 | function _polygon($p,$closed=FALSE) {
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| 188 | if( $this->iLineWeight==0 ) return;
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| 189 | $n=count($p);
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| 190 | $oldx = $p[0];
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| 191 | $oldy = $p[1];
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| 192 | for( $i=2; $i < $n; $i+=2 ) {
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| 193 | imageline($this->img,$oldx,$oldy,$p[$i],$p[$i+1],$this->iCurrentColor);
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| 194 | $oldx = $p[$i];
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| 195 | $oldy = $p[$i+1];
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| 196 | }
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| 197 | if( $closed ) {
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| 198 | imageline($this->img,$p[$n*2-2],$p[$n*2-1],$p[0],$p[1],$this->iCurrentColor);
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| 199 | }
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| 200 | }
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| 201 |
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| 202 | function _filledPolygon($pts) {
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| 203 | $n=count($pts);
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| 204 | for($i=0; $i < $n; ++$i)
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| 205 | $pts[$i] = round($pts[$i]);
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| 206 | imagefilledpolygon($this->img,$pts,count($pts)/2,$this->iCurrentColor);
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| 207 | }
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| 208 |
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| 209 | function _rectangle($xl,$yu,$xr,$yl) {
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| 210 | for($i=0; $i < $this->iLineWeight; ++$i )
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| 211 | $this->_polygon(array($xl+$i,$yu+$i,$xr-$i,$yu+$i,
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| 212 | $xr-$i,$yl-$i,$xl+$i,$yl-$i,
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| 213 | $xl+$i,$yu+$i));
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| 214 | }
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| 215 |
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| 216 | function _filledRectangle($xl,$yu,$xr,$yl) {
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| 217 | $this->_filledPolygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
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| 218 | }
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| 219 |
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| 220 | function _setColor($aColor) {
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| 221 | $this->iCurrentColor = $this->iRGB->Allocate($aColor);
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| 222 | }
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| 223 |
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| 224 | function AddMix($aGraph,$x=0,$y=0,$mix=100,$fx=0,$fy=0,$w=0,$h=0) {
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| 225 | $this->_gdImgHandle($aGraph->Stroke( _IMG_HANDLER),$x,$y,$fx=0,$fy=0,$w,$h,$mix);
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| 226 | }
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| 227 |
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| 228 | function Add($aGraph,$x=0,$y=0,$fx=0,$fy=0,$w=0,$h=0) {
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| 229 | $this->_gdImgHandle($aGraph->Stroke( _IMG_HANDLER),$x,$y,$fx=0,$fy=0,$w,$h);
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| 230 | }
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| 231 |
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| 232 | function _gdImgHandle($agdCanvas,$x,$y,$fx=0,$fy=0,$w=0,$h=0,$mix=100) {
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| 233 | if( $w == 0 ) $w = @imagesx($agdCanvas);
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| 234 | if( $w === NULL ) {
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| 235 | JpGraphError::RaiseL(12007);
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| 236 | //('Argument to MGraph::Add() is not a valid GD image handle.');
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| 237 | return;
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| 238 | }
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| 239 | if( $h == 0 ) $h = @imagesy($agdCanvas);
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| 240 | $this->iGraphs[$this->iCnt++] = array($agdCanvas,$x,$y,$fx,$fy,$w,$h,$mix);
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| 241 | }
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| 242 |
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| 243 | function SetMargin($lm,$rm,$tm,$bm) {
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| 244 | $this->lm = $lm;
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| 245 | $this->rm = $rm;
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| 246 | $this->tm = $tm;
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| 247 | $this->bm = $bm;
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| 248 | }
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| 249 |
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| 250 | function SetExpired($aFlg=true) {
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| 251 | $this->expired = $aFlg;
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| 252 | }
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| 253 |
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| 254 | // Generate image header
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| 255 | function Headers() {
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| 256 |
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| 257 | // In case we are running from the command line with the client version of
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| 258 | // PHP we can't send any headers.
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| 259 | $sapi = php_sapi_name();
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| 260 | if( $sapi == 'cli' )
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| 261 | return;
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| 262 |
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| 263 | if( headers_sent() ) {
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| 264 |
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| 265 | echo "<table border=1><tr><td><font color=darkred size=4><b>JpGraph Error:</b>
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| 266 | HTTP headers have already been sent.</font></td></tr><tr><td><b>Explanation:</b><br>HTTP headers have already been sent back to the browser indicating the data as text before the library got a chance to send it's image HTTP header to this browser. This makes it impossible for the library to send back image data to the browser (since that would be interpretated as text by the browser and show up as junk text).<p>Most likely you have some text in your script before the call to <i>Graph::Stroke()</i>. If this texts gets sent back to the browser the browser will assume that all data is plain text. Look for any text, even spaces and newlines, that might have been sent back to the browser. <p>For example it is a common mistake to leave a blank line before the opening \"<b><?php</b>\".</td></tr></table>";
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| 267 |
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| 268 | die();
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| 269 |
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| 270 | }
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| 271 |
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| 272 | if ($this->expired) {
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| 273 | header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
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| 274 | header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
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| 275 | header("Cache-Control: no-cache, must-revalidate");
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| 276 | header("Pragma: no-cache");
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| 277 | }
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| 278 | header("Content-type: image/$this->img_format");
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| 279 | }
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| 280 |
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| 281 | function SetImgFormat($aFormat,$aQuality=75) {
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| 282 | $this->image_quality = $aQuality;
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| 283 | $aFormat = strtolower($aFormat);
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| 284 | $tst = true;
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| 285 | $supported = imagetypes();
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| 286 | if( $aFormat=="auto" ) {
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| 287 | if( $supported & IMG_PNG )
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| 288 | $this->img_format="png";
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| 289 | elseif( $supported & IMG_JPG )
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| 290 | $this->img_format="jpeg";
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| 291 | elseif( $supported & IMG_GIF )
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| 292 | $this->img_format="gif";
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| 293 | else
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| 294 | JpGraphError::RaiseL(12008);
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| 295 | //(" Your PHP (and GD-lib) installation does not appear to support any known graphic formats.".
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| 296 | return true;
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| 297 | }
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| 298 | else {
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| 299 | if( $aFormat=="jpeg" || $aFormat=="png" || $aFormat=="gif" ) {
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| 300 | if( $aFormat=="jpeg" && !($supported & IMG_JPG) )
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| 301 | $tst=false;
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| 302 | elseif( $aFormat=="png" && !($supported & IMG_PNG) )
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| 303 | $tst=false;
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| 304 | elseif( $aFormat=="gif" && !($supported & IMG_GIF) )
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| 305 | $tst=false;
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| 306 | else {
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| 307 | $this->img_format=$aFormat;
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| 308 | return true;
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| 309 | }
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| 310 | }
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| 311 | else
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| 312 | $tst=false;
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| 313 | if( !$tst )
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| 314 | JpGraphError::RaiseL(12009,$aFormat);
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| 315 | //(" Your PHP installation does not support the chosen graphic format: $aFormat");
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| 316 | }
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| 317 | }
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| 318 |
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| 319 | // Stream image to browser or to file
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| 320 | function Stream($aFile="") {
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| 321 | $func="image".$this->img_format;
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| 322 | if( $this->img_format=="jpeg" && $this->image_quality != null ) {
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| 323 | $res = @$func($this->img,$aFile,$this->image_quality);
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| 324 | }
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| 325 | else {
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| 326 | if( $aFile != "" ) {
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| 327 | $res = @$func($this->img,$aFile);
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| 328 | }
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| 329 | else
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| 330 | $res = @$func($this->img);
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| 331 | }
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| 332 | if( !$res )
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| 333 | JpGraphError::RaiseL(12010,$aFile);
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| 334 | //("Can't create or stream image to file $aFile Check that PHP has enough permission to write a file to the current directory.");
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| 335 | }
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| 336 |
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| 337 | function Stroke($aFileName='') {
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| 338 | // Find out the necessary size for the container image
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| 339 | $w=0; $h=0;
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| 340 | for($i=0; $i < $this->iCnt; ++$i ) {
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| 341 | $maxw = $this->iGraphs[$i][1]+$this->iGraphs[$i][5];
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| 342 | $maxh = $this->iGraphs[$i][2]+$this->iGraphs[$i][6];
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| 343 | $w = max( $w, $maxw );
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| 344 | $h = max( $h, $maxh );
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| 345 | }
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| 346 | $w += $this->lm+$this->rm;
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| 347 | $h += $this->tm+$this->bm;
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| 348 |
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| 349 | // User specified width,height overrides
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| 350 | if( $this->iWidth !== NULL ) $w = $this->iWidth;
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| 351 | if( $this->iHeight!== NULL ) $h = $this->iHeight;
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| 352 |
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| 353 | $this->_imageCreate($w,$h);
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| 354 | $this->iRGB = new RGB($this->img);
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| 355 |
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| 356 | $this->_setcolor($this->iFillColor);
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| 357 | $this->_filledRectangle(0,0,$w-1,$h-1);
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| 358 |
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| 359 | $this->_strokeBackgroundImage();
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| 360 |
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| 361 | if( $this->iDoFrame ) {
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| 362 | $this->_setColor($this->iFrameColor);
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| 363 | $this->iLineWeight=$this->iFrameWeight;
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| 364 | $this->_rectangle(0,0,$w-1,$h-1);
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| 365 | }
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| 366 |
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| 367 | // Copy all sub graphs to the container
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| 368 | for($i=0; $i < $this->iCnt; ++$i ) {
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| 369 | $this->_imageCp($this->iGraphs[$i][0],
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| 370 | $this->iGraphs[$i][1]+$this->lm,$this->iGraphs[$i][2]+$this->tm,
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| 371 | $this->iGraphs[$i][3],$this->iGraphs[$i][4],
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| 372 | $this->iGraphs[$i][5],$this->iGraphs[$i][6],
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| 373 | $this->iGraphs[$i][7]);
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| 374 | }
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| 375 |
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| 376 | // Output image
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|---|
| 377 | if( $aFileName == _IMG_HANDLER ) {
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| 378 | return $this->img;
|
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| 379 | }
|
|---|
| 380 | else {
|
|---|
| 381 | if( $aFileName != '' ) {
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|---|
| 382 | $this->Stream($aFileName);
|
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| 383 | }
|
|---|
| 384 | else {
|
|---|
| 385 | $this->Headers();
|
|---|
| 386 | $this->Stream();
|
|---|
| 387 | }
|
|---|
| 388 | }
|
|---|
| 389 | }
|
|---|
| 390 | }
|
|---|
| 391 |
|
|---|
| 392 | ?>
|
|---|
